src/third_party/web_platform_tests/webdriver/modal/alerts_quit_test.py

import os
import sys
import unittest

sys.path.insert(1, os.path.abspath(os.path.join(__file__, "../..")))
import base_test
from selenium.common import exceptions
from selenium.webdriver.support import wait


class AlertsQuitTest(base_test.WebDriverBaseTest):
    def setUp(self):
        self.wait = wait.WebDriverWait(self.driver, 5, ignored_exceptions=[exceptions.NoAlertPresentException])
        self.driver.get(self.webserver.where_is('modal/res/alerts.html'))

    def test_can_quit_when_an_alert_is_present(self):
        self.driver.find_element_by_css_selector('#alert').click()
        alert = self.wait.until(lambda x: x.switch_to_alert())
        self.driver.quit()
        with self.assertRaises(Exception):
            alert.accept()
        AlertsQuitTest.driver = None


if __name__ == '__main__':
    unittest.main()